I've got WP installed twice on my site, one is causing problems.
If you click on any of the archives here:
You'll notice that it's going to content located on a seperate WP install here http://rinf.com/alt-news
Also, if you click on the article on /columnists/news/ they will either go to content on the other install, or display nothing but a page using the /alt-news theme.
Thanks for your help